I went shopping in a German supermarket and found all these products, that used to be very popular in East Germany. All these brands have somehow survived the German re-unification ) or have come back after being a way for some years.
This video tells the stories of these products.

- Fit detergent
- Florena cream
- Rotkäppchen sparkling wine
- Nudossi chocolate spread
- Halloren Kugeln
- Russisch Brot
- Dresdner Stollen
- Spreewald gherkins
- Bautz'ner mustard
- Böhme chocolate

Sources
Websites:
https://www.fit.de/fit-gmbh/unternehm...
https://www.florena.de/uber-florena/m...
https://www.rotkaeppchen.de/geschichte/
https://www.dr-quendt.de/unternehmen/...
https://www.emil-reimann.de/de/emil-r...
https://spreewaldhof.de/unsere-geschi...
https://www.delitzscher.de/de/unterne...

Book:
Der Treuhand Komplex – Norbert Pötzl

Picture of the Brandenburg Gate:
By Lear 21 at English Wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index...